11 lines
216 B
Common Lisp
11 lines
216 B
Common Lisp
(defun catalan (n)
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(if (= n 0)
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1
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(* (/ (* 2 (- (* 2 n) 1)) (+ n 1)) (catalan (- n 1))) ) )
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(defun range (x y)
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(cons x
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(if (< x y)
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(range (+ x 1) y) ) ) )
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(print (mapcar catalan (range 0 14)))
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